STT State Street Corporation

State Street Corporation (NYSE: STT) will release its first-quarter 2008 financial results followed by an Internet broadcast of its earnings conference call on Tuesday, April 15, 2008, at 9:00 a.m. EDT. The call will be accessible on State Street's investor relations home page, at www.statestreet.com/stockholder, and by telephone at +1 706/679-5594 (Conference ID #41974482). Recorded replays of the earnings conference call will be available on the web site, and by telephone at +1 706/645-9291 (Conference ID#41974482), beginning two hours after the call�s completion. The telephone replay will be available for approximately two weeks following the conference call. State Street Corporation (NYSE: STT) is the world's leading provider of financial services to institutional investors including investment servicing, investment management and investment research and trading. With $15.3 trillion in assets under custody and $2 trillion in assets under management at December 31, 2007, State Street operates in 26 countries and more than 100 geographic markets worldwide and employs 27,110 worldwide. For more information, visit State Street�s web site at www.statestreet.com or call 877/639-7788 [NEWS STT] toll-free in the United States and Canada, or +1 678/999-4577 outside those countries.